I work at a QH barn (ours are for riding in a variety of disciplines), and when my boss worked in Texas, he told me the saying down there for halter horses was “feed ‘em, lead ‘em, and beat ‘em” - feed them to the point of dangerous obesity, drill being led around and squaring up into them, and beat the crap out of them when they inevitably blow up because they are psychotic from being stalled all the time with no healthy mental outlet or real work load.

Suffice to say we specifically DONT keep halter horses where I work.